7.0.0 C++

2024-11-02 version 7.0.0

• Refine build system (#1133)
• Refine CI (#1122)
• Refine documents (#1117)

<< breaking changes >>

• Revert double and fload packing behavior (#1144)
  • If below decimal point is zero (e.g. 2.00),
    • Before: pack as int format family 0x02
    • After : pack as float format family 0xcb 0x40 0x00 0x00 0x00 0x00 0x00 0x00 0x00